Hammer or the like



May 17,

R. w. MILLS HAMMER OR THE LIKE Filed June 4;, 25

Patented May 17, 1927.

outrun STATES ROBERTW. MIL S, OFIBENTON 1153303,: MICHIGAN.

HAMMER on THE LIKE.

Application filed June 4,-

'This invention relates to hammers and imilartools and more particularly to means ,vhereby the handle can be attached firmly I to the head of the tool without danger of. separating while the tool :is in use.

A. further object is to provide fastening means which can be appliedrea-dily and Will be held positively. against loosening after being properly. adjusted;-

l/Vith' the foregoingand other objects in view which will 1 appear as the description proceeds, the invention resides: in the combinationand arrangement'of-parts andin the details oficonstruction hereinafter describedv and claimed, it being understood that changesinitheiprecise embodiment of the invention hereindisclosed may be made within the scope of .whatis claimed without departing from the. spirit ofthe ini'entlone In the accompanying; drawingst-he preferred forms. of; theinvention have been shown.

In said drawings, I g I Figurel is a view partly in section and partly in elevation of a hammer llELVlIigfitllG present improvements: combined thQI'GWVItlL Figure 2 is a perspective view of one of the fastening elements used therewlth.

Figures 3, 1, and 5 are perspective views of other parts of the fastener.

v Figure 6 is a section through a portion of the handle of the tool showing a modified fastening means.

Figure 7 is a view partly in elevation and partly in section of a portion of ahammer showing another means for fastening the handle to the hammer head. y

Figure 8 is an end view of aportion of the tool shown in Figure 7, the fastening means being removed.

Referring to the figures by characters of reference 1 designates the head of a hammer or other like tool in which is formed a transverse dovetail groove 2. This groove is adapted to receive the dovetail end 3 of a handle member 4 said end being provided with a reinforcing sleeve or ferrule 3. This handle member is gradually reduced or tapered toward that end thereof remote from the dovetail 3 and said reduced end abuts against the small end of another tapered handle section 5 having a recess 6 in its large or. exposed end. The two handle memhere are held against relative rotation by dowels 7 projecting into the ends of the 1925. I SeriaI No'. 26,222.

handle; members. as shown. The handle.

members arealso provided with registering central bores 8 which aline with a similar bore 9- entendingthroughthe headl. A recess 10 is providedin the head at the outer end ofthe bore 9 and is preferably angulan.

A bolt 11 is adapted to be inserted into the registering bores 8.and:9." Thisbolt has a head 12 designed to bear against the head 1 andis also provided with an angular portion. 13fittingclose to the head and adapted to,

be seated snugly'within the recess 10, thereby to-hold the bolt against rotation within the head 1. One endof the bolt isj'screw threaded, as shown at 14, this end projecting into the recess 6. It is here extended through a disk 15 having prongs 16 ex'tending therefrom and adapted to project. into the inner Wall of the recess 6. On this disk are provided outstandingears 17 arranged in pairs. and seatedbetween these ears are arms 18 radiating from a washer 19' mount- Ied on the bolt andbearingagainst the disk The ends ofthe arms 18 project beyond the disk 15 wherethey can be engaged by teeth 23 upon one face of. a nut-22. Consequently as'the nut is tightened these teeth will snap into engagement with one or more of the arms 18 and hold the nut against rotation relative to washer 19. As the washer 19 is interlocked with disk 15 and this disk, in turn, is anchored to the handle member 5, it will be apparent that the different parts can not become detached accidentally. If desired recesses 25 may be formed in the periphery of nut 22 for the reception of a spanner wrench used for tightening the nut. Vith the parts thus properly secured they will all be held together firmly and itn'ill become impossible for them to separate accidentally. If desired a washer 21 can be substituted for washer 19. This washer has tongues or ears 20 strucktherefrom,leaving openings 24 into which teeth 23 can snap. Tongues or ears 20 will in turn engage the disk 15 and hold the washer 21 against retrograde movement.

sponding with the nut 22 can then be through the head from this bore through the recess at 38 as screwed. onto the end of the bolt- 30 and the feet 31 thereon will snap into one or more of the openings 32 formed in the washer thus holding the nut against retrograde movcment.

Another modified form of device has been illustrated in Figure 7. In this structure the handle member 33 has a bore 34 extending thereinto "from its dovetail end. 35 and anchored in this bore is a metal. core 36 in the form of an interiorly screw threaded tube having anchoring prongs 37 at its inner end which will spread into the handle member when the core is forced into bore.

A circular recess 38 is formed in the outer face of the head 39 of the tool and is c0ncentric with the bore l0 which extends Grooves 4E1 radiate shown especially in Figure 8 and these grooves are adapted to receive arms 42 radiating from a washer similar to that illustrated in Figure 3.

will be engaged bytongucs ib struck back from a washer istcorresponding with the washer 21 shown in Figure 4c. A bolt 45 is adapted to be screwed into the core 36 after being inserted through bore 40. This bolt has a head 46 provided with an angular extension 47 adapted to fit snugly within the Thus when the bolt is screwed into. the core 36 the parts will be pressed firmly together and the tong or tongs 43 will snap into engagement with The ends of these arms pro ect partly across the recess 38 where they one or more of the arms 42 thereby holding the bolt against retrograde movement.

It is to be understood of course that the improvements herein described can be ap' plied to difii'erent kinds of tools made up of handles and heads attached thereto.

hat is claimed is:

' The combination with a tool having a dovetail groove in one face, a handle having one end insertible into the groove, there being a longitudinal'bore within the handle and through the grooved tool, one end of the bore being counterbored, of a bolt removably seated within the bores having one end portion engaging the tool to hold the bolt against rotation, the other end portion of the bolt being screw threaded and extending into the counterbore, a disk loosely fitted on the bolt and having projections engaging a wall of the counterbore, said bolt being slidable in the disk, spaced projections on. one face of the disk, a washer loosely mounted on the bolt and having radial arms held against rotation by the projections on the disk, said arms projecting radially beyond the disk, a nut engaging the threaded portion of the bolt and seated'in the counterbore, and teeth upon the nut for snapping into engagementwith the projecting ends of the arms, thereby to hold the nut against retrograde movement.

In testimony that I claim the foregoing as my own,I'have hereto 'aflixed my signature.

ROBERT MILLS. 

